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Are there disadvantages to using a generic varchar(255) for all text-based fields?
...e stored in 1 or 2 bytes. However: "When sending a key to the handler for index_read() or records_in_range, we always use a 2-byte length for the VARCHAR to make things simpler." See forge.mysql.com/wiki/MySQL_Internals_MyISAM
– Bill Karwin
Feb 12 '11 at 18:5...
How does the Google “Did you mean?” Algorithm work?
...l of billions of web pages' worth of words stored. There is no easy way to index Levenshtein distance for fast retrieval of near matches without calculating the Levenshtein distance some billions of times for every word queried. Levenshtein distance is therefore not of much use in this situation, a...
PHP server on local machine?
...0.1:8000 and boom, your system should be up and running. (There must be an index.php or index.html file for this to work.)
You could also add a simple Router
<?php
// router.php
if (preg_match('/\.(?:png|jpg|jpeg|gif)$/', $_SERVER["REQUEST_URI"])) {
return false; // serve the requested res...
Does Ruby have a string.startswith(“abc”) built in method?
...8.7 and 1.9.0 - for older versions you may want to use one of the regex or index versions mentioned in other answers.
– Hamish Downer
Sep 7 '11 at 13:25
3
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Output data from all columns in a dataframe in pandas [duplicate]
...on.
paramdata.columns
stores the respective column names and
paramdata.index
stores the respective index (row names).
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Is there a difference between x++ and ++x in java?
...stack (`2`) and set the
// value of the local variable at index `1` (`y`) to this value.
2: iload_1 // Push the value (`2`) of the local variable at index `1` (`y`)
// onto the operand stack
3: iinc 1, 1 // Sign-extend the constant value `1` to an int,...
Deserialize JSON into C# dynamic object?
...t);
return true;
}
public override bool TryGetIndex(GetIndexBinder binder, object[] indexes, out object result)
{
if (indexes.Length == 1 && indexes[0] != null)
{
if (!_dictionary.TryGetValue(indexes[0].ToString(), ...
Big O of JavaScript arrays
...ired)
Prepending - O(n) via unshift, since it requires reassigning all the indexes
Insertion - Amortized O(1) if the value does not exist. O(n) if you want to shift existing values (Eg, using splice).
Deletion - Amortized O(1) to remove a value, O(n) if you want to reassign indices via splice.
Swapp...
Use basic authentication with jQuery and Ajax
...ample u gave but it doesn't work ` $.ajax ({ url: "server.in.local/index.php", beforeSend: function (xhr) { xhr.setRequestHeader(“Authorization”, “Basic ” + encodeBase64 (“username:password”) );}, succes: function(val) { //alert(val); alert("Thanks for your comment!...
SQL Update with row_number()
...he value generally doesn't change once it is set.
Also make sure you have indexes, especially if you have a WHERE clause on the SELECT statement. A filtered index worked great for me as I was filtering based on payment statuses.
My query using PARTITION by
UPDATE UpdateTarget
SET PaidOrder...